Malicious PDF — malware analysis report

Static analysis result for SHA-256 d41fc767cfdb300a…

MALICIOUS

PDF

72.5 KB Created: 2021-02-11 17:20:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: a4e80656dd61e1f23ae6f41795364dfe SHA-1: 5e18478934f3a31c3f7a3972141757a25278a6f1 SHA-256: d41fc767cfdb300acbcdc030cd6d24ab2e2765d65d028e4e35efff4be2edbd1d
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://baarspo.ru/wix?keyword=imvu+apk+hack+ios PDF link annotation
    • https://zeberafuduzugag.weebly.com/uploads/1/3/2/6/132682167/1528490.pdfIn PDF document text
    • http://ecoservice-vlad.ru/basunujesewejuku6cfqf.pdfIn PDF document text
    • https://fufivivol.weebly.com/uploads/1/3/0/8/130873849/luwekage.pdfIn PDF document text
    • https://cdn.sqhk.co/noxisoture/cVidhgz/igo_gps_navigation_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/pazakazagoz/gizIhRj/poe_elementalist_carrion_golem.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409393/normal_5fe1266f9075e.pdfIn PDF document text
    • https://cdn.sqhk.co/ligumorik/LLzggO6/gosaxo.pdfIn PDF document text
    • http://meriline.store/refikabedegabixukon03ni.pdfIn PDF document text
    • https://cdn.sqhk.co/zaviresodew/fgjhhpr/how_much_do_jibjab_ecards_cost.pdfIn PDF document text
    • https://cdn.sqhk.co/gobuwovuv/uemSbjf/scrabble_search_word_hunt_physical_health.pdfIn PDF document text
    • https://xiwupegolowiba.weebly.com/uploads/1/3/1/6/131606046/616c9.pdfIn PDF document text
    • http://wordsideget.top/29361437897soozn.pdfIn PDF document text
    • http://blue-tick-central.com/7207088063gru67.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/ziwuvijevo/60804961949.pdfIn PDF document text
    • https://s3.amazonaws.com/fadupazageraf/wwe_champions_guide_events.pdfIn PDF document text
    • https://s3.amazonaws.com/xukanomarexumu/king_size_bed_sheet_size_india.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e0d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0D6 5108 bytes
SHA-256: c83ca1d683dece4bdbd57d5682f758eda978b86f71a551c586f5aa6bd08bd264
font_01_sfnt_off0000f21a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF21A 10256 bytes
SHA-256: 0c2449b502c8fbd972e9fe7c1ff2f1d6b172f218ccc675847e2f180bb86488ad